CyCloNe!

Hey guys I just had a custom 3" catback made and after the install I noticed that my turbo spools slower. Once it comes on it's a beast... but is there any reason that it should spool slower? I haven't adjusted my tune for it yet maybe that's a contributor. Any way if you have an idea please let me know. Thanks!



My setup:
3" Catback
MBC
Autothority Stage 2 15psi
Bosch HV Fuel Pump

Fastrax203

Less back-pressure means slower exhaust velocity hence the slower spool up.

Tedro951

racerxrick

rocketrider2

Hey guys, not meaning to threadjack. I live in Suffolk VA and I am in the process of buying an 88 951. Just wanted to say hi, I didnt realize there were any 951 guys around here. Would love to meet fellow enthusiasts, find out what I should do to my "new" 951. Also who does the servicing for you guys?
Sorry for all the questions

racerxrick

seriously...I recall having to turn the MBC in a few notches after installing my larger 3" catback.

CyCloNe!

So you had to raise the boost or lower it?

CyCloNe!

Hey bro welcome to the forums!! Ya man we should get together, my numbers 804.314.4101 hit me up any time. As far as servicing generally I do it myself or get help from a fellow rennlister, keeps money in my pockets for goodies

CyCloNe!

you gonna share that corn or just stare

Reimu

Are you sure your car has a turbo

RCinXS

mwc951

So do I leave my 2.5" B & B...
Or replace it with a 3" like I've been thinking??!!

CyCloNe!

Get the 3" sounds great and with your turbo should be great!

CyCloNe!

I'm going to check for exhaust and boost leaks to make sure, if not then it's just simply like what Fastrax said... I already found one decent exhaust leak right at the weld for the muffler inlet, I got that fixed but it's still a little slow on spool. I think I got a few RPM's back lol.

Nope it's an NA with a leafblower taped to the intake

racerxrick

I remember having to raise it...sorry, when I screw the MBC **** "in" it raises boost.